@inproceedings{CAiSE-2011-Guizzardi,
	author        = "Giancarlo Guizzardi",
	booktitle     = "{Proceedings of the 23rd International Conference on Advanced Information Systems Engineering}",
	doi           = "10.1007/978-3-642-21640-4_12",
	isbn          = "978-3-642-21639-8",
	pages         = "138--153",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Ontological Foundations for Conceptual Part-Whole Relations: The Case of Collectives and Their Parts}",
	volume        = 6741,
	year          = 2011,
}